Last fall we used Leatherique dye on the entire interior. Wasn't cheap but we were able to repair and "save" a couple of leather Mr. Mike seats. That was worth the cost.
Here's their site...
http://www.leatherique.com/
Here's the results...
Before - fading causes many shades of gray:
After - seats, console, even steering wheel is now color-matched:
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Steve, 87 Fiero GT, Getrag w/Ultimate Shift Kit, Street Dreams drop spindles, Poly mounts, KYBs, Michelin tires, Ocelot exhaust, Infinity audio, DashScan
[This message has been edited by SLagrec1 (edited 03-09-2004).]